The Audiophonics PCM1804 ADC has arrived. Its small dimensions make it very suitable for integration into an existing sytem. I'll probably only use it externally during a testphase and until I have a connector in the DSP system. Connection will probably be a 3.5mm stereo version as there's no space for two additional Cinch connectors on the back panel. We'll see...
Greetings,
Winfried
Greetings,
Winfried
@Idarieut
I'm sorry, but due to personal circumstances I have not been able to advance to the point of testing the PCM1804 with my digital chain.
But the way I'd prepare to test this device is:
Please let me know how your progress goes.
Greetings,
Winfried
I'm sorry, but due to personal circumstances I have not been able to advance to the point of testing the PCM1804 with my digital chain.
But the way I'd prepare to test this device is:
- Make sure you have soldered the bord jumpers right, there are a couple...
- Ensure the the ADC output resolution matches the plug-in resolution (you can test your wanted ADC resolution later)
- Ensure that the DSP in- and outputs as well as all the filters of the DSP are not muted
- Ensure there is a correct channel routing
- Ensure the master volume and the channel volumes are not set to "0"
Please let me know how your progress goes.
Greetings,
Winfried
Thanks!
So if I understand correctly, op1 and op2 are shorted so sampling rate is 48k.
Op4 is open, the Adc is in master mode.
Should be 96k for minidsp, I will change this.
How about master or slave? I have no idea what it should be.
So if I understand correctly, op1 and op2 are shorted so sampling rate is 48k.
Op4 is open, the Adc is in master mode.
Should be 96k for minidsp, I will change this.
How about master or slave? I have no idea what it should be.
Thank you Marcel, that’s what I thought master meant but as the purpose of this device is to convert, I didn’t see any situation where it would make sense for it to be in slave mode. Hence my interrogation 🙂
Still doesn’t work. I wonder if it’s the cable.
I still have a fiber optic cable lying around but it’s for gbic, doesn’t fit into toslink easily.
I still have a fiber optic cable lying around but it’s for gbic, doesn’t fit into toslink easily.
Imagine you make your own digital mixing console with built-in ADCs. Mixing simply means calculating a weighted sum, but that only works when all signals to be mixed have the exact same sample rate. As the sample rate of an I2S interface equals the word clock frequency, it's then convenient to run all ADCs in slave mode at some commonly generated word clock frequency.
@ Idarieut
Please describe your test set-up in detail, how and with what kind of signal you are testing.
Also: Which miniDSP system and PlugIn you use is of interest. From what you report so far it is not proven that the ADC is the issue!
Other ideas:
If you should have measuring equipment, please state what it is, as this may be of help as well.
Regards,
Winfried
Please describe your test set-up in detail, how and with what kind of signal you are testing.
Also: Which miniDSP system and PlugIn you use is of interest. From what you report so far it is not proven that the ADC is the issue!
Other ideas:
- If you have another DAC besides the miniDSP, try to connect with that one to see if that may work
- Cablewise, are you sure you use a cinch cable made for digital transmission?
- You could also try different audio cinch cables, such cables often work with digital signals
If you should have measuring equipment, please state what it is, as this may be of help as well.
Regards,
Winfried